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Finding the Fourth Proportional to 54,328.90, 76,112.30 and 54,328.90

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Solution

The fourth proportional to 54,328.90, 76,112.30 and 54,328.90 is: 76,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,328.90 : 76,112.30 = 54,328.90 : x
  2. Step 2: Convert to fraction form
    54,328.90/76,112.30 = 54,328.90/x
  3. Step 3: Cross multiply
    54,328.90x = 76,112.30 × 54,328.90
  4. Step 4: Simplify right side
    54,328.90x = 4,135,097,535.47
  5. Step 5: Solve for x
    x = 4,135,097,535.47/54,328.90
  6. Step 6: Final answer
    x = 76,112.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.